I have 2k SP and I very much agree with you
first of all, I rather have 50% of a lot than 75% off a little bit ... more actual users is more important right now than anything else
secondly, the curators share among many, hundreds sometimes ... and yes, right now that's usually so minuscule that I can't be bothered to make an extra effort ... I only vote for posts I actually read, but I don't go looking for posts that might trend ... it's not worth the effort
this while I actually spend most of my votes on people's comments, be it comments on my own posts or replies to my comments ... I vote for a lot of comments
this while right now, the best thing to do for me would be to vote on my own posts and comments ... not that I do that, but that's how the incentive works out now